20373903 has 32 divisors (see below), whose sum is σ = 33196800. Its totient is φ = 12247200.

The previous prime is 20373887. The next prime is 20373911. The reversal of 20373903 is 30937302.

It is not a de Polignac number, because 20373903 - 2⁴ = 20373887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20373923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53568 + ... + 53946.

It is an arithmetic number, because the mean of its divisors is an integer number (1037400).

Almost surely, 2^20373903 is an apocalyptic number.

20373903 is a deficient number, since it is larger than the sum of its proper divisors (12822897).

20373903 is a wasteful number, since it uses less digits than its factorization.

20373903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 20373903 is about 4513.7460052599. The cubic root of 20373903 is about 273.1228766982.

The spelling of 20373903 in words is "twenty million, three hundred seventy-three thousand, nine hundred three".